SiUS281117
Basic Control
34
Function and Control
2.2
Compressor PI Control
Compressor PI Control
Te:
Low pressure equivalent saturation temperature (°F)
TeS: Target Te value
(Varies depending on Te setting, operating frequency, etc.)
Tc:
High pressure equivalent saturation temperature (°F)
TcS:
Target Tc value
(Varies depending on Tc setting, operating frequency, etc.)
Carries out the compressor capacity PI control to maintain Te at constant during cooling
operation and Tc at constant during heating operation to ensure stable unit performance.
[Cooling]
[Heating]
RZR18/24/30P, RZQ18/24/30P
Compressors may operate in a pattern other than those listed in above tables subject to the
operating conditions.
Controls compressor capacity to adjust Te to achieve target value (TeS).
Te setting (Set in Set-up mode 2)
L
M (Normal)
(factory
setting)
H
37.5
43
48
Controls compressor capacity to adjust Tc to achieve target value (TcS).
Tc setting
L
M (Normal)
(factory
setting)
H
109.5
115
120
STEP
Inverter
1
52Hz
2
57Hz
3
62Hz
4
68Hz
5
74Hz
6
81Hz
7
88Hz
8
96Hz
9
104Hz
10
110Hz
11
116Hz
12
124Hz
13
133Hz
14
143Hz
15
158Hz
16
165Hz
17
177Hz
